.css-test{
    width: 200px;
    height: 200px;
    text-align: center;
    font-size: 24px;
    font-weight: 700;
    color: yellowgreen;
    margin: 0 auto;
    background-color: antiquewhite;
}

.jquery-test{
    width: 500px;
    margin: 0 auto;
}

h3{
    text-align: center;
}

.url-loader{
    margin: 50px auto;
    width: 200px;
    height: 200px;
    background-image: url(../images/img.jpg);
    background-repeat: no-repeat;
    background-size: 100% 100%;
}

.html-loader{
    width: 400px;
    margin: 0 auto;
}

.test-flex{
    backface-visibility: hidden;
    display: flex;
}